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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Nuclear gene phylogeny of narrow-mouthed toads (Family: Microhylidae) and a discussion of competing hypotheses concerning their biogeographical origins
Molecular Phylogenetics and Evolution, Volume 44, No. 3, Year 2007
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Description
The family Microhylidae has a large circumtropic distribution and contains about 400 species in a highly subdivided taxonomy. Relationships among its constituent taxa remained controversial due to homoplasy in morphological characters, resulting in conflicting phylogenetic hypotheses. A phylogeny based on four nuclear genes (rag-1, rag-2, tyrosinase, BDNF) and one mitochondrial gene (CO1) of representatives of all currently recognized subfamilies uncovers a basal polytomy between several subfamilial clades. A sister group relationship between the cophylines and scaphiophrynines is resolved with moderate support, which unites these endemic Malagasy taxa for the first time. The American members of the subfamily Microhylinae are resolved to form a clade entirely separate from the Asian members of that subfamily. Otophryne is excluded from the subfamily Microhylinae, and resolved as a basal taxon. The placement of the Asian dyscophine Calluella nested within the Asian Microhyline clade rather than with the genus Dyscophus is corroborated by our data. Bayesian estimates of the divergence time of extant Microhylidae (47-90 Mya) and among the subclades within the family are discussed in frameworks of alternative possible biogeographic scenarios. © 2007 Elsevier Inc. All rights reserved.
Authors & Co-Authors
van der Meijden, Arie
Germany, Konstanz
Universität Konstanz
Netherlands, Amsterdam
Institute for Biodiversity and Ecosystem Dynamics - Amsterdam
Vences, Miguel
Germany, Braunschweig
Technische Universität Braunschweig
Hoegg, Simone
Germany, Konstanz
Universität Konstanz
Boistel, Renaud
France, Paris
Cnrs Centre National de la Recherche Scientifique
Channing, Alan
South Africa, Bellville
University of the Western Cape
Meyer, Axel
Germany, Konstanz
Universität Konstanz
Statistics
Citations: 135
Authors: 6
Affiliations: 5
Identifiers
Doi:
10.1016/j.ympev.2007.02.008
ISSN:
10557903
e-ISSN:
10959513
Research Areas
Cancer
Genetics And Genomics